WO2022042006A1 - Vanne de détente électronique - Google Patents

Vanne de détente électronique Download PDF

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Publication number
WO2022042006A1
WO2022042006A1 PCT/CN2021/103189 CN2021103189W WO2022042006A1 WO 2022042006 A1 WO2022042006 A1 WO 2022042006A1 CN 2021103189 W CN2021103189 W CN 2021103189W WO 2022042006 A1 WO2022042006 A1 WO 2022042006A1
Authority
WO
WIPO (PCT)
Prior art keywords
stopper
valve
electronic expansion
valve needle
connecting sleeve
Prior art date
Application number
PCT/CN2021/103189
Other languages
English (en)
Chinese (zh)
Inventor
詹少军
邸志强
Original Assignee
浙江盾安人工环境股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Priority to KR1020237001625A priority Critical patent/KR20230023037A/ko
Priority to JP2022567465A priority patent/JP7499879B2/ja
Publication of WO2022042006A1 publication Critical patent/WO2022042006A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F16K1/38—Valve members of conical shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present application relates to the technical field of valves, in particular, to an electronic expansion valve.
  • the rotor connecting plate and the magnetic steel are integrally injected, and the stopper needs to be assembled with the positioning hole of the rotor connecting plate after injection molding and hot-melt riveted together (3 hot melting points). This process is relatively It is complicated and the stability is not good enough.
  • the rotor connecting plate needs to be welded and fixed with the screw. When welding, the stopper will be burned due to the close distance.
  • the electronic expansion valve in the prior art uses the pre-compression of the pre-tightening spring to enable the conical surface of the valve needle to effectively contact the valve port to ensure sealing reliability. Therefore, the pre-tightening spring becomes an indispensable part. .
  • the main purpose of the present application is to provide an electronic expansion valve to solve the problem that the structure of the electronic expansion valve in the prior art is relatively complex.
  • an electronic expansion valve which includes: a valve seat, the valve seat has a valve port; a nut, the nut is connected with the valve seat; a valve needle, which passes through the valve needle inside the nut, and can control the opening of the valve port; the magnetic rotor, which is rotatably arranged in the valve seat and is located outside the nut; the stopper, the stopper is connected with the inner wall of the magnetic rotor, and is connected with the magnetic rotor It is integrally arranged, and the two rotate synchronously, and the valve needle is worn on the stopper; the connecting sleeve, the connecting sleeve is arranged between the stopper and the valve needle, and the connecting sleeve, the stopper and the valve needle are integrally arranged, and The three rotate synchronously.
  • one end of the connecting sleeve away from the valve port has a protruding section, the protruding section surrounds the peripheral side of the valve needle, and the protruding section protrudes from the surface of the stopper on the side away from the valve port.
  • a side surface of the connecting sleeve is provided with a ring groove, a gap is formed in the ring groove, an inner wall of the stopper has a protrusion, and the protrusion protrudes into the ring groove and the gap.
  • the stopper has a non-circular configuration.
  • connection sleeve is a metal sleeve.
  • the outer side of the nut has a middle stop boss
  • the stopper has a first stop boss
  • the stopper or the magnetic rotor has a second stop boss
  • the middle stop boss Located between the first stop boss and the second stop boss, when the magnetic rotor, the stopper, the connecting sleeve and the valve needle rotate together to the close limit position or the open limit position, the first stop boss or the first stop boss
  • the second stop boss abuts against the middle stop boss to control the movement range of the valve needle.
  • the lower surface of the stopper has a first protruding section and a second protruding section connected in sequence, the first protruding section extends along the axial direction of the valve needle, and the second protruding section extends along the axial direction of the valve needle.
  • the segment is connected with one end of the first protruding segment away from the lower surface of the stopper and extends along the radial direction of the valve needle, and the second protruding segment has a second stop boss.
  • the stopper further has a process hole, the process hole penetrates the stopper along the axial direction of the valve needle, and the second stop boss is on the surface of the stopper along the axial direction of the valve needle.
  • the projection is inside the process hole.
  • a reference boss is provided on the top surface of the nut, and the reference boss can abut with the lower surface of the stopper, so as to perform initial adjustment on the stopper.
  • one end of the valve needle close to the valve port has a conical surface segment, the conical surface segment cooperates with the valve port to control the opening of the valve port, and there is always a gap between the conical surface segment and the valve port .
  • the valve needle, the magnetic rotor, the stopper and the connecting sleeve are provided, and the stopper and the magnetic rotor are integrated, the connecting sleeve and the stopper are integrated, and the valve needle and the connecting sleeve are integrated, so that the four
  • the components are integrally arranged to form a synchronous movement as a whole, and the valve needle is directly matched with the nut and the connecting sleeve, and the valve needle does not need to be provided with components such as springs, thereby further simplifying the structural complexity of the electronic expansion valve.
  • connection sleeve and the connecting sleeve are injection-molded into one body, and the connecting sleeve and the valve needle can be laser welded into one body, and the processing technology has also been greatly improved, avoiding the existing process problems and improving the efficiency.
  • FIG. 1 shows a schematic structural diagram of the electronic expansion of the first embodiment of the present application
  • FIG. 2 shows a schematic structural diagram of the cooperation of the magnetic rotor and the stopper of the electronic expansion valve in FIG. 1;
  • FIG. 3 shows a schematic structural diagram of the stopper of the electronic expansion valve in FIG. 1;
  • Fig. 4 shows the structural schematic diagram of the connecting sleeve of the electronic expansion valve in Fig. 1;
  • Fig. 5 shows the structural schematic diagram of the nut of the electronic expansion valve in Fig. 1;
  • FIG. 6 shows a schematic structural diagram of the electronic expansion of the second embodiment of the present application.
  • FIG. 7 shows a schematic structural diagram of the cooperation of the magnetic rotor and the stopper of the electronic expansion valve in FIG. 6 .
  • valve seat 10, valve seat; 11, valve port; 20, nut; 21, middle stop boss; 30, valve needle; 40, magnetic rotor; 50, stopper; 51, first stop boss; 52, the first 2. Stop boss; 53. Process hole; 60. Connecting sleeve; 61. Protruding section; 62. Ring groove; 63. Notch.
  • the present application provides an electronic expansion valve.
  • An electronic expansion valve as shown in FIG. 1 to FIG. 5 includes a valve seat 10 , a nut 20 , a valve needle 30 , a magnetic rotor 40 , a stopper 50 and a connecting sleeve 60
  • the valve seat 10 has a valve port 11 ;
  • the nut 20 It is connected with the valve seat 10;
  • the valve needle 30 is penetrated in the nut 20 and can control the opening of the valve port 11;
  • the magnetic rotor 40 is rotatably arranged in the valve seat 10 and is located outside the nut 20;
  • the stopper 50 is connected with The inner wall of the magnetic rotor 40 is connected and integrally arranged with the magnetic rotor 40, and the two rotate synchronously, the valve needle 30 is passed through the stopper 50;
  • the connecting sleeve 60 is arranged between the stopper 50 and the valve needle 30, connecting The sleeve 60 , the stopper 50 and the valve needle 30 are integrally arranged and rotated synchronously.
  • a valve needle 30, a magnetic rotor 40, a stopper 50 and a connecting sleeve 60 are provided, and the stopper 50 is integrated with the magnetic rotor 40, the connecting sleeve 60 and the stopper 50 are integrated, and the valve needle 30 is integrated with the connecting sleeve.
  • 60 is integrated, so that the four components are integrally arranged to form a whole of synchronous movement, and the valve needle 30 is directly matched with the nut 20 and the connecting sleeve 60, and the valve needle 30 does not need to be provided with springs and other components, thus further simplifying the electronic The structural complexity of the expansion valve.
  • the overall structure of the electronic expansion valve is simplified, which facilitates the processing and assembly of the electronic expansion valve;
  • the device 50 and the connecting sleeve 60 are injection-molded into one body, and the connecting sleeve 60 and the valve needle 30 can be laser welded into one body.
  • the processing technology is also greatly improved, the existing process problems are avoided, and the efficiency is improved.
  • the connecting sleeve 60 is in the shape of a sleeve, and the end of the connecting sleeve 60 away from the valve port 11 has a protruding section 61 in the same annular shape.
  • the protruding section 61 protrudes from the surface of the stopper 50 away from the valve port 11, that is, the protruding section 61 at the top of the connecting sleeve 60 in FIG. Deformation by heat to improve processing technology.
  • a ring groove 62 is formed on the side of the connecting sleeve 60, and a notch 63 is formed in the ring groove 62.
  • a plane notch 63 is milled on the side of the stopper 50 to form a D-shaped mouth.
  • the inner wall of the stopper 50 has a protrusion that matches the ring groove 62 and the notch 63, and the protrusion extends into the ring groove 62 and In this way, the bonding strength of injection molding between the stopper 50 and the connecting sleeve 60 can be improved, so that the stopper 50 and the connecting sleeve 60 are well combined, and the reliability of torque transmission is ensured.
  • the connecting sleeve 60 needs to be welded with the valve needle 30, in this embodiment, the connecting sleeve 60 is set as a metal sleeve, and the stopper 50 is a plastic material, and the two can be integrally injection molded.
  • the stopper 50 in this embodiment has a non-circular structure.
  • the part of the magnetic rotor 40 that cooperates with the stopper 50 is also set to the same shape. In this way, when the magnetic rotor 40 is in the magnetic force When rotating under the action, the rotational force of the magnetic rotor 40 can be better transmitted to the stopper 50, so as to ensure that the magnetic rotor 40 is well combined with the stopper 50, and can transmit torque effectively, and avoid slippage.
  • the outer side of the nut 20 has a middle stop boss 21
  • the stopper 50 has a first stop boss 51 and a second stop boss 52
  • the first stop boss 51 is larger than the first stop boss 51
  • the second stop boss 52 is far away from the valve port 11, and the middle stop boss 21 is located between the first stop boss 51 and the second stop boss 52.
  • the magnetic rotor 40 Since the nut 20 is fixedly connected to the valve seat 10, the nut 20 is fixed, when the magnetic rotor 40 rotates under the action of magnetic force, the magnetic rotor 40 drives the stopper 50, the connecting sleeve 60 and the valve needle 30 to rotate together, at this time the first stop boss 51 and the second stop boss
  • the positional relationship between the two platforms 52 and the intermediate stopper boss 21 will change. Specifically, when the valve needle 30 moves close to the valve port 11 to the closing limit position, the first stop boss 51 abuts against the intermediate stop boss 21 , so that the valve needle 30 cannot continue to approach the valve port 11 .
  • a gap is still formed between the valve needle 30 and the valve port 11, and the gap at this time is the minimum gap that can be formed by the two; when the valve needle 30 moves away from the valve port 11 to the opening limit position, the second stop boss 52 Abutting with the intermediate stop boss 21 , so that the valve needle 30 cannot continue to be far away from the valve port 11 , so as to control the movement range of the valve needle 30 .
  • the above setting realizes the limit function of the fully closed state and the fully open state of the electronic expansion valve, which ensures that the stroke of the electronic expansion valve from fully closed to fully open is uniform and controllable, and ensures the reliability of the electronic expansion valve.
  • the stopper 50 and the nut 20 are generally made of PPS material by injection molding.
  • a gap is always formed between the valve needle 30 and the valve port 11 in this embodiment, that is to say, even if the valve needle 30 is at the closing limit position, there is still a gap between the valve needle 30 and the valve port 11, so that The electronic expansion valve has the function of closing the valve and having flow.
  • the stopper 50 of this embodiment is in the shape of a disc, and a hole for the valve needle 30 and the connecting sleeve 60 to pass through is opened at the middle position.
  • the surface on one side of the stopper 50 is the lower surface of the stopper 50 in FIG. 3 .
  • a block-like structure is directly protruded as the first stop boss 51 .
  • the first extension section extends along the axial direction of the valve needle 30, and the second extension section is connected to the first extension section.
  • the end of the segment away from the lower surface of the stopper 50 is connected and extends along the radial direction of the valve needle 30.
  • the first extension segment and the second extension segment are bent 90 degrees to connect, and the second extension segment is connected by 90 degrees. That is, there is a second stop boss 52 so as to cooperate with the middle stop boss 21 .
  • the stopper 50 further has a process hole 53 , the process hole 53 penetrates the stopper 50 along the axial direction of the valve needle 30 , that is, the process hole 53 penetrates the thickness of the stopper 50 , and the second stopper boss 52 The projection on the surface of the stopper 50 in the axial direction of the valve needle 30 is located in the process hole 53 , so as to facilitate the demoulding process of the second stopper boss 52 .
  • the top surface of the nut 20 is provided with a reference boss.
  • the reference boss can abut against the lower surface of the stopper 50, so that the stopper 50 position for initialization adjustment.
  • one end of the valve needle 30 close to the valve port 11 has a conical surface section, and the conical surface section cooperates with the valve port 11 to control the opening of the valve port 11 , and there is always a gap between the conical surface section and the valve port 11 .
  • Gap that is, when the first stop boss 51 abuts against the middle stop boss 21, a gap is still formed between the outer wall of the conical surface section and the inner wall of the valve port 11, so that the electronic expansion valve remains closed when the valve is closed.
  • the electronic expansion valve can also be set in the form of closed valve and no flow.
  • the valve seat 10 of this embodiment includes two parts, a seat body and a sleeve, which together form an accommodating cavity for accommodating components such as the valve needle 30 , the magnetic rotor 40 , the stopper 50 and the connecting sleeve 60 , and the valve seat 10 also includes a valve port seat , an opening is provided on the seat body, the valve port seat is installed at the opening, and the valve port seat forms the valve port 11 so as to cooperate with the valve needle 30 .
  • the difference from the first embodiment is that the structure of the second stop boss 52 is different.
  • the first stop boss 51 is provided on the stopper 50
  • the second stop boss 52 is not provided on the stopper 50 .
  • it is arranged on the inner side of the magnetic rotor 40 , that is, a boss radially protrudes from the inner side of the magnetic rotor 40 , and the boss is the second stop boss 52 .
  • the first extension section and the second extension section may not be provided, that is, the disc-shaped stopper 50 only needs to be
  • the first stop boss 51 may be provided on the lower surface.
  • a plurality in the above-mentioned embodiments refers to at least two.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

L'invention concerne une vanne de détente électronique, laquelle vanne comprend : une base de vanne (10), la base de vanne (10) comportant un orifice de vanne (11) ; un écrou (20), l'écrou (20) étant relié à la base de vanne (10) ; une aiguille de vanne (30), l'aiguille de vanne (30) étant disposée dans l'écrou (20) de manière pénétrante et étant apte à commander le degré d'ouverture de l'orifice de vanne (11) ; un rotor magnétique (40), le rotor magnétique (40) étant disposé de manière rotative dans la base de vanne (10) et situé à l'extérieur de l'écrou (20) ; un élément d'arrêt (50), l'élément d'arrêt (50) étant relié à une paroi interne du rotor magnétique (40) et intégré au rotor magnétique (40), l'élément d'arrêt (50) et le rotor magnétique (40) tournant de manière synchrone, et l'aiguille de vanne (30) étant disposée sur l'élément d'arrêt (50) de manière pénétrante ; et un manchon de liaison (60), le manchon de liaison (60) étant disposé entre l'élément d'arrêt (50) et l'aiguille de vanne (30), le manchon de liaison (60), l'élément d'arrêt (50) et l'aiguille de vanne (30) étant d'un seul tenant et tournant de manière synchrone. Par la vanne, le problème de l'état antérieur de la technique, qui est que la structure de vannes de détente électroniques est compliquée, est résolu.
PCT/CN2021/103189 2020-08-31 2021-06-29 Vanne de détente électronique WO2022042006A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020237001625A KR20230023037A (ko) 2020-08-31 2021-06-29 전자 팽창 밸브
JP2022567465A JP7499879B2 (ja) 2020-08-31 2021-06-29 電子膨張弁

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021868628.0 2020-08-31
CN202021868628.0U CN212959909U (zh) 2020-08-31 2020-08-31 电子膨胀阀

Publications (1)

Publication Number Publication Date
WO2022042006A1 true WO2022042006A1 (fr) 2022-03-03

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PCT/CN2021/103189 WO2022042006A1 (fr) 2020-08-31 2021-06-29 Vanne de détente électronique

Country Status (4)

Country Link
JP (1) JP7499879B2 (fr)
KR (1) KR20230023037A (fr)
CN (1) CN212959909U (fr)
WO (1) WO2022042006A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN212959909U (zh) * 2020-08-31 2021-04-13 盾安环境技术有限公司 电子膨胀阀
CN216242310U (zh) * 2021-11-19 2022-04-08 浙江盾安禾田金属有限公司 电子膨胀阀

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KR20020000089A (ko) * 2000-06-21 2002-01-04 이충전 양방향 제어기능을 갖는 전자 팽창 밸브
CN101629649A (zh) * 2008-07-16 2010-01-20 株式会社鹭宫制作所 电动阀
CN105241131A (zh) * 2014-06-17 2016-01-13 浙江盾安人工环境股份有限公司 电子膨胀阀
JP2016095109A (ja) * 2014-11-17 2016-05-26 株式会社ヒートポンプ研究所 高速遮断型電子リニアー膨張弁
CN106763989A (zh) * 2015-11-25 2017-05-31 浙江盾安人工环境股份有限公司 电子膨胀阀
CN211175578U (zh) * 2019-11-19 2020-08-04 浙江盾安禾田金属有限公司 磁转子组件及电子膨胀阀
CN212959909U (zh) * 2020-08-31 2021-04-13 盾安环境技术有限公司 电子膨胀阀

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JP2006200663A (ja) 2005-01-21 2006-08-03 Saginomiya Seisakusho Inc 電動式コントロールバルブ
JP5164579B2 (ja) 2008-01-10 2013-03-21 株式会社不二工機 電動弁及びその組立方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020000089A (ko) * 2000-06-21 2002-01-04 이충전 양방향 제어기능을 갖는 전자 팽창 밸브
CN101629649A (zh) * 2008-07-16 2010-01-20 株式会社鹭宫制作所 电动阀
CN105241131A (zh) * 2014-06-17 2016-01-13 浙江盾安人工环境股份有限公司 电子膨胀阀
JP2016095109A (ja) * 2014-11-17 2016-05-26 株式会社ヒートポンプ研究所 高速遮断型電子リニアー膨張弁
CN106763989A (zh) * 2015-11-25 2017-05-31 浙江盾安人工环境股份有限公司 电子膨胀阀
CN211175578U (zh) * 2019-11-19 2020-08-04 浙江盾安禾田金属有限公司 磁转子组件及电子膨胀阀
CN212959909U (zh) * 2020-08-31 2021-04-13 盾安环境技术有限公司 电子膨胀阀

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JP2023528185A (ja) 2023-07-04
CN212959909U (zh) 2021-04-13
JP7499879B2 (ja) 2024-06-14
KR20230023037A (ko) 2023-02-16

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